JavaScript动态向Select下拉框添加数组数据的方法

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>将数组中的数据添加到下拉菜单中</title>
<style type="text/css">
<!--
.style1 {color: #FFFFFF}
-->
</style>
<script type="text/javascript">
var counts;
counts=0;
arr = new Array("JavaScript与ASP","JavaScript与JSP","JavaScript与ASP.NET","JavaScript与PHP"); 
counts=arr.length;
function Myselect(){
 var i;
 for (i=0;i < counts; i++) {
 document.form1.sel.options[i] = new Option(arr[i],i);
 }
}
</script>
</head>
<body>
<table width="280" height="160" border="0" align="center" cellpadding="5" cellspacing="0">
 <tr>
 <td height="34" align="center"><span class="style1" style="font-weight:bold ">将数组中的数据添加到下拉菜单中</span></td>
 </tr>
 <tr>
 <td align="center" valign="top" bgcolor="#9ACCFF"><form name="form1">
  <table width="235" height="69" border="0" align="center" cellpadding="0" cellspacing="0">
  <tr>
   <td height="21"><select name="sel" id="sel" onFocus="Myselect()">
   </select></td>
  </tr>
  <tr>
   <td height="120">&nbsp;</td>
  </tr>
  </table>
 </form></td>
 </tr>
</table>
</body>
</html>